Water-soluble azo compounds, a process for their preparation and

Details Water-soluble azo compounds, a process for their preparation and Water-soluble azo compounds, a process for their preparation and

1983-07-20

1985-01-08

Sneed, Helen M. S.

Organic compounds -- part of the class 532-570 series

Organic compounds

Azo

C09B 3302, C09B 3102

Patent

active

044926545

ABSTRACT:
Disazo compounds corresponding to the general formula (1) ##STR1## as well as their metal salts, in which D.sub.1 denotes the benzene or naphthalene nucleus, which can be further substituted by one or two substituents from the group of fluorine, chlorine, bromine, carboxy, lower alkyl, lower alkoxy and nitro and/or one, two or three sulfo groups, D.sub.2 is the benzene or naphthalene nucleus, which is substituted by the substituent X defined below and, in addition to the group --SO.sub.2 --Y, can be further substituted by one or two substituents from the group of carboxy, lower alkyl and lower alkoxy and/or by one substituent from the group of fluorine, chlorine, bromine and nitro and/or one, two or three sulfo groups, X denotes a fluorine, chlorine or bromine atom, which is necessarily bonded to D.sub.2 in ortho-position to the azo group, Y denotes the vinyl, .beta.-sulfatoethyl, .beta.-chloroethyl, .beta.-thiosulfatoethyl or a .beta.-acyloxyethyl group with the acyl radical of a lower alkanecarboxylic acid or of a benzoic acid or of a benzenesulfonic acid, and a and b each represent the number zero or 1, the sum of (a+b) being equal to 1 or 2. These compounds (1) are very suitable as fiber-reactive dyes for dyeing, for example natural or regenerated cellulose fiber, wool or synthetic polyamide fibers. They give on these materials intense dyeings and prints of good fastness properties, and are distinguished, in particular, by a good stability to copper ions, when used in printing processes.

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patent: 3457252 (1969-07-01), Meininger
patent: 3755290 (1973-08-01), Montmollin et al.
patent: 3923778 (1975-12-01), Montmollin et al.
patent: 4149850 (1979-04-01), Schlaefer et al.
patent: 4185012 (1980-01-01), Meininger
patent: 4257770 (1981-03-01), Nishimura et al.
patent: 4263206 (1981-04-01), Anderson

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